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    <title>Help On LaTeX Sectioning</title>

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<h2>Sectioning</h2>


<p> Sectioning commands provide the means to structure your

    text into units. The <a href="ltx-22.html">document style</a>

    determines which sectioning commands are supported. They should

    be used with the following heirarchy:</p>


<ul>

    <li><tt>\part</tt></li>

    <li><tt>\chapter</tt> (report style only)</li>

    <li><tt>\section</tt></li>

    <li><tt>\subsection</tt></li>

    <li><tt>\subsubsection</tt></li>

    <li><tt>\paragraph</tt></li>

    <li><tt>\subparagraph</tt></li>

    <li><tt>\subsubparagraph</tt> (milstd and book-form styles only)</li>

    <li><tt>\subsubsubparagraph</tt> (milstd and book-form styles only)</li>

</ul>


<p>The <a href="ltx-3.html">counter</a> for each level is reset

    when the level above is incremented (except chapters are

    numbered sequentially regardless of the part).</p>


<p>All sectioning commands take the same general form:</p>



<pre>

  <tt>\chapter[optional]{title}</tt>

  <a href="ltx-252.html">\label{lab}</a> <a href="ltx-434.html">%</a> optional, for cross referencing

   text for this unit ...

   ...

</pre>


<p>In addition to providing the heading in the text, the

    mandatory argument of the sectioning command can appear in two

    other places:</p>


<ol>

    <li>the table of contents</li>

    <li>the running head at the top of the page</li>

</ol>


<p>You may not want the same thing to appear in these other two

    places as appears in the text heading. To handle this

    situation, the sectioning commands have an optional argument

    that provides the text for these other two purposes.</p>


<p>The <tt>title</tt> or <tt>optional</tt> title are moving

    arguments so <a href="fragile.html">fragile</a> commands

    contained in these arguments must be protected.</p>


<p>All the sectioning commands have *-forms that print a title,

    but do not print a number with the title and do not incement the

    relevant <a href="ltx-3.html">counter</a> and do not make an

    entry in the <a href="toc.html">table of contents</a>.</p>


<p>A blank line before or after a sectioning command has no

    effect.</p>


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<p>Related topics</p>


<ul>

    <li><tt><a href="ltx-252.html">\label</a></tt></li>

    <li
    <tt><a href="ltx-142.html">\appendix</a></tt></li>

</ul>


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<p>

    See also <a href="ltx-3.html">Counters</a>,

    <a href="ltx-13.html">Cross References</a><br>

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